Balance adjusting member and a balance adjusting method for a rotor

ABSTRACT

To provide a rotor balance adjusting member and the rotor balance correction method, which make easy Attachment and removal of the weight to a rotor prevent omission of the weight while a rotor is rating.  
     A rotor balance adjusting member  1  has the ring member  2  fixed to the pulley  10  concentrically, weight  3,  and the clip member  4  which fixes this weight to this ring member. The ring member has an outer side fit-in slot  21,  an inner side fit-in slot  22,  an outer side stop slot  23,  and an inner side stop slot  24.  In the state in which attachment and removal are free, and can be fitted in this outer side stop slot and this inner side stop slot, the clip member comprising of elastic material and having a motion of the circumferential direction regulated by this outer side fit-in slot and this inner side fit-in slot. The weight fixed to this clip member is arranged in the position which counters the inner side of the ring member, when this clip member is fitted in the ring member.

FIELD OF THE INVENTION

This invention relates to the technology that corrects the balance of arotor.

BACKGROUND OF THE INVENTION

To correct the balance of rotor is important in oscillating control ofthe source of a drive of a rotor, and the driving force transfermechanism of a rotor, also in the point of preventing noise.

It is known that the unbalance of a rotor will happen according to thesize difference in a rotor and its axis.

Various methods are used for correcting the balance of a rotor. As amethod of adjusting the balance of a rotor, a “balance-adjusting methodfor rotor”, the method of attaching weight to a rotor, for example, likea publication in the patent reference 1 and the patent reference 2.

Moreover, there is the method of scraping a part of rotor as anothermethod.

-   Patent reference 1

Japanese Laid Open Gazette No. 10-47435, A

-   Patent reference 2

Japanese Laid Open Gazette No. 2002-147533, A

DESCRIPTION OF THE INVENTION

Problem to be Solved by the Invention

However, attachment and detachment of the weight to a rotor are not easyfor the method of a publication in the patent reference 1 and the patentreference 2, and it is not good for operation.

On the other hand, when attachment and removal of weight are easy, atthe time of rotation of a rotor, weight may be omitted and the unbalanceof a rotor may happen.

Moreover, when correcting the balance of a rotor by scraping a part ofrotor, there is a problem of scraps dispersing around.

This invention shows the balance adjusting member and balance adjustingmethod for rotor which make easy to attachment and detachment of theweight to a rotor and can prevent omission of the weight.

MEANS FOR SOLVING THE PROBLEM

Subjects whom this invention going to solve is like the above.Accordingly, a means for solving this subject is explained.

Clime 1 shows a balance-adjusting member having a ring member fixed to arotor concentrically, a weight, a clip member which fixes said weight tosaid ring member, said ring member has a outer side fit-in slot formedin the outer side of the ring member in the direction of the axis, aninner side fit-in slot formed in the position corresponding to the outerside fit-in slot in the direction of the axis at inner side of the ringmember, a outer side stop slot deeper than said outer side fit-in slotand formed in the direction of a circumference at the middle part of theouter side of this ring member, an inner side stop slot deeper than saidouter side fit-in slot and formed in the direction of a circumference atthe middle part of the outer side of this ring member, said clip membercomprising of an elastic substance, whose motion of the circumferencedirection being regulated by the outer side fit-in slot and theinner-side fit-in slot, and being able to fit-in alternately to engageand disengage into said outer side stop slot and said inner side stopslot, said weight fixed to said clip member arranged in the positionwhich counters the inner side of the ring member with the clip memberfitted in the ring member.

Clime 2 shows a balance-adjusting member, wherein an engagementprojection is formed in said weight, an engagement hole is opened at aportion corresponding to the inner side of said ring member, said ringmember has a release slot corresponds to said engagement projection.

Clime 3 shows a balance-adjusting member, wherein said ring has atapered surface in an end.

Clime 4 shows a balance-adjusting member, wherein said ring member andsaid rotor are integrated.

Clime 5 shows a method of adjusting balance of rotor comprising a fixingprocess for a ring member, wherein said fixing process for a ring memberis a process which fixes a ring member to a rotor in the shape of aconcentric circle, wherein said ring member has a outer side fit-in slotformed in a predetermined position of the outer side in the axisdirection, an inner-side fit-in slot formed in a position correspondingto a outer side fit-in slot in the axis direction in an inner side, aouter side stop slot which is deeper than the outer side fit-in slot andwas formed in the direction of a circumference at a middle part of theouter side, and an inner-side stop slot which was deeper than a theinner-side fit-in slot and was formed in the direction of acircumference at a middle part of a the inner side, a weight fittingprocess, wherein said weight fitting process is a process comprising, ina state where the weight fixed to a clip member, wherein said clipmember consists of an elastic substance and is regulated a motion of thecircumference direction by the outer side fit-in slot and the inner sidefit-in slot, fixing the clip member to the outer side stop slot and theinner side stop slot with capability to fit-in alternately to engage anddisengage into, arranging the weight in a position which counters aninner side of a member.

Clime 6 shows a method of adjusting balance of rotor, wherein anengagement projection is formed in said weight, an engagement hole isopened at a portion corresponding to the inner side of said ring member,said ring member has a release slot corresponds to said engagementprojection.

Clime 7 shows a method for adjusting balance of rotor, said ring memberhas a tapered surface in an end.

Clime 8 shows a method of adjusting balance of rotor comprising afabricating process for a ring member, wherein said fabricating processfor a ring member is a process which fabricates a ring member integratedwith a rotor concentrically, wherein said ring member has a outer sidefit-in slot formed in a predetermined position of the outer side in theaxis direction, an inner-side fit-in slot formed in a positioncorresponding to a outer side fit-in slot in the axis direction in aninner side, a outer side stop slot which is deeper than the outer sidefit-in slot and was formed in the direction of a circumference at amiddle part of the outer side, and an inner-side stop slot which wasdeeper than a the inner-side fit-in slot and was formed in the directionof a circumference at a middle part of a the inner side, a weightfitting process, wherein said weight fitting process is a processcomprising, in a state where the weight fixed to a clip member, whereinsaid clip member consists of an elastic substance and is regulated amotion of the circumference direction by the outer side fit-in slot andthe inner side fit-in slot, fixing the clip member to the outer sidestop slot and the inner side stop slot with capability to fit-inalternately to engage and disengage into, arranging the weight in aposition which counters an inner side of a member.

Clime 9 shows a method of adjusting balance of rotor, wherein anengagement projection is formed in said weight, an engagement hole isopened at a portion corresponding to the inner side of said ring member,said ring member has a release slot corresponds to said engagementprojection.

Clime 1 shows a method for adjusting balance of rotor wherein, said ringmember has a tapered surface in an end.

Effect of the Invention

The effect of this invention is shown below.

In claim 1, it can be prevented that omission of a weight and thedivergence from the fixed position of weight by the centrifugal forceand vibration. And a weight can be easily detached and attached from arotor.

In claim 2, a weight can be easily fixed with easiness to attachment anddetachment to a clip member, and workability becomes high.

In claim 3, the clip member to whom weight was fixed can be easilyfitted in a ring member. And workability becomes high.

In claim 4, the work, which fixes a ring member to a rotorconcentrically, is omissible. The work process for fixing can be reducedand workability becomes high.

In claim 5, it can be prevented that omission of a weight and thedivergence from the fixed position of weight by the centrifugal forceand vibration. And a weight can be easily detached and attached from arotor.

In claim 6, a weight can be easily fixed with easiness to attachment anddetachment to a clip member, and workability becomes high.

In claim 7, the clip member to whom weight was fixed can be easilyfitted in a ring member, and workability becomes high.

In claim 8, it can be prevented that omission of a weight and thedivergence from the fixed position of weight by the centrifugal forceand vibration. And a weight can be easily detached and attached from arotor.

In claim 9, a weight can be easily fixed with easiness to attachment anddetachment to a clip member, and workability becomes high.

In claim 10, the clip member to whom weight was fixed can be easilyfitted in a ring member, and workability becomes high.

BEST MODE OF CARRYING OUT THE INVENTION

Below, a balance adjusting member 1, as an example of the balanceadjusting member of this invention, is explained with FIG. 1, FIG. 2,FIG. 3, and FIGS. 4, 5, and 6.

The following explanation shows a pulley 10, fixed to an engine outputaxis as an example of a rotor. This invention is not limited to this,but can be widely applied to all rotors.

Here, the “rotor” in this application means the object, which revolve onan axis. And in this application, in order to explain easily, thedirection of the arrow A shown in FIG. 2 is defined as the direction ofan axis, the direction which intersects perpendicularly with the arrow Ais defined as the radius direction, the direction of the arrow B shownin FIG. 1 is defined as the direction of a circumference. The followingexplanation is given using these.

The pulley 10 shown in FIGS. 1 and 2 is the example of the rotorconcerning this invention, and is fixed to an engine output axis. Theengine which is the source of a drive force is not illustrated.

As shown in FIGS. 1 and 2, a rotor balance adjusting member 1 balance apulley 10, and mainly has the ring member 2, weight 3, and clip member4, etc.

As shown in FIGS. 1 and 2, the ring member 2 is an abbreviation ringshape member, and has outer side 2 a, inner side 2 b, front end side 2c, and 2 d of back end sides.

The ring member 2 is fixed to front 10 of back end side 2 d in the shapeof concentricity.

And, tapered-surface 2 e and 2 f of tapered surfaces are formed in theend of the ring member 2, respectively. The end of the ring member 2 isspecifically the boundary part of front end side 2 c and outer side 2 a,and the boundary part of front end side 2 c and inner side 2 b.

In here, “the shape of concentricity” means that the axis of the pulley10 which is a rotor, and the axis of the ring member 2 are mostly inagreement in this embodiment.

The ring member 2 has plural outer side fit-in slots 21, plural innerside fit-in slots 22, an outer side stop slot 23, an inner side stopslot 24, a releasing groove 25, etc.

Outer side fit-in slot 21 is a slot formed in the position with outerside 2 a of the ring member 2 in the direction of an axis.

Namely, the direction of straight side of the outer side fit-in slot 21is mostly in agreement in the direction of an axis of the ring member 2.The direction of an axis of the ring member 2 is shown as the arrow A inFIG. 2.

In the case of this embodiment, the outer side fit-in slot 21 isarranged at a total of 12 places at outer side 2 a of the ring member 2,and the interval of the adjacent outer side fit-in slot 21-21 is almostthe same.

An inner side fit-in slot 22 is a slot. The inner side fit-in slot 22 isformed in the position corresponding to an outer side fit-in slot 21 inthe direction of an axis in inner side 2 b of the ring member 2,respectively.

By other ways of speaking, the direction of straight side of an innerside fit-in slot 22 is mostly in agreement with the direction of an axisof the ring member 2. The direction of an axis of the ring member 2 isthe direction of the arrow A in FIG. 2. And each inner side fit-in slot22 overlaps with each outer side fit-in slot 21 in the state where itsaw from the radius.

A total of 12 inner side fit-in slots 22 are arranged at inner side 2 bof the ring member 2. The interval of the adjacent inner side fit-inslot 22-22 is almost the same.

In this embodiment, the sum total of an outer side fit-in slot 21 andthe sum total of an inner side fit-in slot 22 are 12 in outer side 2 aand inner-side 2 b of the ring member 2, respectively.

In addition, the part where a slot is arranged is not limited to 12places, but responds to the size of the ring member 2 etc.

An outer side stop slot 23 is a slot formed in the direction of acircumference at the middle part of outer side 2 a of the ring member 2.

Namely, the direction of straight side of an outer side stop slot 23 ismostly in agreement in the direction of a circumference of the ringmember 2 (the direction of the arrow B in FIG. 1).

The outer side stop slot 23 is a ring-like slot. And, the depth of theouter side stop slot 23 is the depth from outer side 2 a to the bottomof the outer side stop slot 23, and is deeper than the depth of theouter side fit-in slot 21.

The inner side stop slot 24 is a slot formed in the direction of acircumference at the middle part of inner-side 2 b of the ring member 2.The direction of straight side of an inner side stop slot 24 is mostlyin agreement in the direction of a circumference of the ring member 2.The direction of a circumference of the ring member 2 is the directionof the arrow B in FIG. 1. The inner side stop slot 24 is a ring-likeslot. And, the depth of an inner side stop slot 24 is the depth frominner-side 2 b to the bottom of an inner side stop slot 24, and isdeeper than the depth of an inner side fit-in slot 22.

In addition, in this embodiment, the ring member 2 and the pulley 10 areseparated, and the ring member 2 is fixed to the pulley 10. In otherembodiment, the ring member 2 and the pulley 10 can be fabricated inone. By the above structures, the work which fixes the ring member 2 tothe pulley 10 in the shape of concentricity in high accuracy can beomitted, the number of work can be reduced, and workability becomesgood.

Weight 3 is an object which has predetermined mass. Weight 3 has thebody part 31, the engagement projection 32, etc.

The body part 31 is made of the member of abbreviation rectangularparallelepiped form, and the engagement projection 32 is formed in thesurface.

In this embodiment, the engagement projection 32 is made of a base 32 aand an engagement part 32 b, and is about T form.

Scraping the body part 31, weight 3 can be adjusted to desired mass.

By other methods, the weight 3 of desired mass can be chosen using theweight 3 which has an engagement projection 32 in common form and hasthe body part 31 of different volume.

The clip member 4 is a member for fixing to the ring member 2, and candetach and attach weight 3. The clip member 4 is made from the metal ofthe shape of a board of the abbreviation rectangle bended in theabbreviation U type. The clip member 4 has the connection part 41, theouter side fit-in part 42, the inner-side fit-in part 43, etc.

The connection part 41 is a portion corresponding to the abbreviationcentral part before crookedness of the metal plate which constitutes theclip member 4, and the outer side fit-in part 42 and the inner-sidefit-in part 43 are installed in the both ends of the connection part 41,respectively.

The outer side fit-in part 42 is a portion extended from the end of theconnection part 41, and a stop part 42 a is formed in the tip part ofthe outer side fit-in part 42.

The inner-side fit-in part 43 is a portion which extends at the otherends of the connection part 41, and stop part 43 a is formed in the tippart of the inner-side fit-in part 43. The engagement hole 44 is formedin the inner-side fit-in part 43.

The form of the engagement hole 44 is the form corresponding toengagement part 32 b of the engagement projection 32 of weight 3exactly. And engagement part 32 b of the engagement projection 32 isinserted in the engagement hole 44, and weight 3 is rotated to the clipmember 4 centering on base 32 a of the engagement projection 32.Thereby, weight 3 is fixable to the clip member 4 with function to beattached and detached.

The clip member 4 to which weight 3 is fixed in attachable anddetachable is fitted in toward back end sides 2 d along with the outerside fit-in slot 21 and an inner side fit-in slot 22 from front end side2 c of the ring member 2.

In this embodiment, the width of the clip member 4, and the width of theouter side fit-in slot 21 and an inner side fit-in slot 22 are the samein the direction of a circumference. Therefore, the clip member 4 andweight 3 have prevented shifting in the direction of a circumference tothe ring member 2 by vibration at the time of rotation of the pulley 10etc.

And, when the clip member 4, the weight 3 is being fixed in attachableand detachable, is fitted in the ring member 2 along with the outer sidefit-in slot 21 and the inner side fit-in slot 22, the stop part 42 a andthe stop part 43 a of the clip member 4 engage with the outer side stopslot 23 and the inner side stop slot 24, respectively.

Thus, the clip member 4 and weight 3 have prevented shifting in thedirection of an axis to the ring member 2 by vibration at the time ofrotation of the pulley 10 etc.

The weight 3 is fixed to the clip member 4 by the engagement projection32 in attachable and detachable.

In the clip member 4, the engagement projection 32 project on thesurface which contacts the inner side of the ring member 2.

Therefore, in this embodiment, the releasing groove 25 is formed in thedirection of the axis on the ring member 2 of the clip member 4, andinterference with the engagement projection 32 and the ring member 2 isprevented. In the portion corresponding to the engagement projection 32in a fit-in state, namely, almost central part of the inner side fit-inslot 22 of the ring member 2, the releasing groove 25 is formed in thedirection of an axis.

And, width of the releasing groove 25 is made narrower than the lengthof the long side of the engagement part 32 b of engagement projection32. It prevents rotation of weight 3 to the clip member 4, the omissionof the engagement projection 32 from the engagement hole 44, andomission of weight 3 from the pulley 10 during rotation of the pulley10.

In addition, it is the case where the weight 3 is fixed to the clipmember 4 with glue etc., and when not forming the engagement projection32 in weight 3, the releasing groove 25 can be omitted.

And when the clip member 4, weight 3 is being fixed possible withattachable and detachable, is fitted in the ring member 2 along with theouter side fit-in slot 21 and the inner side fit-in slot 22, the clipmember 4 is arranged in the position which counters inner-side 2 b ofthe ring member 2.

Thus, during rotation of the pulley 10, big centrifugal force, the forceof the radius direction of the pulley 10, is applied to the weight 3.

Weight 3 is supported by the ring member 2 and pushed against inner-side2 b of the ring member 2.

Therefore, weight 3 prevents omission from the ring member 2 and thepulley 10 by the centrifugal force under rotation of the pulley 10.

The weight 3 of this embodiment is fixed to the clip member 4 by theengagement projection 32 possible the attachment and detachment. Inaddition, the engagement projection 32, the engagement hole 44, and thereleasing groove 25 are omissible by fixing weight to a clip member bymethods, such as adhesion or welding.

As mentioned above, the rotor balance adjusting member 1 of thisembodiment has the ring member 2 fixed to the pulley 10 concentrically,the weight 3, and the clip member 4 which fixes weight 3 to the ringmember 2.

The ring member 2 has plural outer side fit-in slots 21 formed in thepredetermined position of outer side 2 a of the ring member 2 in thedirection of an axis, plural inner side fit-in slots 22 formed in theposition corresponding to the outer side fit-in slot 21 in the directionof an axis at the inner-side 2 b of the ring member 2, the Outer sidestop slot 23 which is deeper than the outer side fit-in slot 21, andformed in the direction of a circumference at the middle part of outerside 2 a of the ring member 2, the Inner side stop slot 24 which isdeeper than an inner side fit-in slot 22, and formed in the direction ofa circumference at the middle part of inner-side 2 b of the ring member2.

Clip member 4, made by crooking an almost rectangular metal plate in theshape of U, has a stop part 42 a and 43 a which is formed in both ends,respectively.

The clip member 4 is fitted in the ring member 2 along with the outerside fit-in slot 21 and the inner side fit-in slot 22. And the stop part42 a and 43 a engage with the outer side stop slot 23 and the inner sidestop slot 24, respectively, the weight 3 fixed to the clip member 4 isarranged in the position which counters inner-side 2 b of the ringmember 2.

There is an effect indicated below from the above structures. The weight3 fixed to the ring member 2 by the clip member 4 can be prevented outof the fixed position, and can be prevented omission from the pulley 10by the centrifugal force and vibration by rotation of the pulley 10. Byfitting in the ring member 2 the weight 3 currently fixed to the clipmember 4 in the direction of an axis with the clip member 4, weight 3can be easily attached in the pulley 10. And weight 3 can be easilyremoved to the pulley 10 by drawing out in the direction of an axis fromthe ring member 2.

In addition, the power of the direction of an axis by the vibration atthe time of rotation of the pulley 10 etc. of acting on weight 3 isfainter than the centrifugal force which acts on weight 3 at the time ofrotation of the pulley 10. Therefore, stop parts 42 a and 43 a engagewith the outer side stop slot 23 and the inner side stop slot 24,respectively, and weight 3 does not shift in the direction of an axis atthe time of rotation of the pulley 10.

In addition, the clip member of this invention is not limited by theclip member 4 of this embodiment. The clip member will demonstrate thesame effect at other structures, the following conditions are suited.The clip member should consist of elastic material, such as metalmaterial and resin material. The clip member should be able to be fittedin the outer side stop slot and the inner side stop slot, and be able tobe removed in the state where the motion of the direction of acircumference was regulated by the outer side fit-in slot and the innerside fit-in slot. The weight fixed to the clip member should be arrangedin the position which counters the inner side of a ring member in thestate that the clip member fits in a ring member.

And, at the rotor balance adjusting member 1 of this embodiment, theengagement projection 32 are formed in weight 3, the engagement hole 44is formed in the portion corresponding to inner-side 2 b of the ringmember 2 in the clip member 4, the releasing groove 25 corresponding tothe engagement projection 32 is formed in the ring member 2.

By such structure, the engagement projection 32 is engaged with theengagement hole 44 and the weight 3 can be easily fixed to the clipmember 4 in the state which can be detached and attached. Thereby,workability becomes good.

And the rotor balance adjusting member 1 of this embodiment, thetapered-surface 2 e and 2 f are formed in the end of the ring member 2.By such structure, the clip member 4 to which weights 3 were fixed canbe easily fitted in the ring member 2, and workability becomes good.

And, another embodiment of a rotor balance adjusting member 1 isfabricating the ring member 2 and the pulley 10 in one. Thereby, thework for fixing the ring member 2 to the pulley 10 concentrically can beomitted, operations can be reduced, and workability becomes good.

Below FIG. 7 (a) is shown and the first embodiment of the rotor balancecorrection method of this invention is explained. In addition, in thefollowing explanation, the rotor balance adjusting member 1 shown evenin FIG. 6 from FIG. 1 is used for convenience.

The first embodiment of the rotor balance correction method is themethod the pulley 10 is balanced, and there are mainly the ring memberfixation process 110, a weight fit-in process 200, etc. in it.

The ring member fixation process 110 is a process which fixes the ringmember 2 to the pulley 10 concentrically. After the ring member fixationprocess 110 is completed, it shifts to the weight fit-in process 200.

The weight fit-in process 200 is a process which fits the clip member 4in the ring member 2 in the state which fixed weight 3 to the clipmember 4. More specifically, at the ring member fixation process 110,the engine which has the pulley 10 which fixed the ring member 2 isdriven, the pulley 10 is rotated, and, vibration by rotation of thepulley 10 is measured. Here, a calculation means etc. is used formeasurement of vibration. A calculation means computes the size ofvibration in the direction of the axis, peripheral, and radius with theoutput signal from sensors or a sensor which detects vibration, like anacceleration sensor etc. The weight and the attachment position ofweight 3 for canceling vibration are computed. And a measurement resultdetermines the weight of weight 3, and the attachment position (either12 sets of outer side fit-in slot 21 and inner side fit-in slots 22which are formed in the ring member 2 in the case of this embodiment) ofweight 3. And the weight 3 adjusted to the determined weight is fittedin determined outer side fit-in slot 21 and the inner side fit-in slot22 by the clip member 4.

As indicated above, it is the first embodiment of the rotor balancecorrection method of this invention, it has the ring member fixationprocess 110 and the weight fit-in process 200, and the ring memberfixation process 110 is a process which fixes the ring member 2 to thepulley 10 concentrically. Ring member 2 has the outer side fit-in slot21 formed in the predetermined position of outer side 2 a in thedirection of an axis, the inner side fit-in slot 22 formed in theposition corresponding to the outer side fit-in slot 21 in the directionof an axis in inner-side 2 b, the outer side stop slot 23 formed in thecircumferential direction at the middle part of outer side 2 a moredeeply than the outer side fit-in slot 21, and the inner side stop slot24 formed in the circumferential direction at the middle part ofinner-side 2 b more deeply than an inner side fit-in slot 22. At theweight fit-in process 200, Weight 3 is fixed to the crooked clip member4, Clip member 4 is fitted in the ring member 2 along with the outerside fit-in slot 21 and an inner side fit-in slot 22, Stop part 42 a and43 a are engaged with any 1 set of the outer side fit-in slot 21 and theinner side fit-in slot 22, and Weight 3 is arranged in the positionwhich counters inner-side 2 b of the ring member 2.

This embodiment has the merit shown below. Thus, the weight 3 fixed tothe ring component 2 by the clip component 4 can prevent shifting from afixed position or dropping out of the pulley 10 by the rotationcentrifugal force of the pulley 10, or vibration. And, the attachmentand removal to the pulley 10 become easy by fitting the weight 3, whichis fixed to the ring component 2 by the clip component 4, in thedirection of an axis to the ring component 2 with the clip component 4,or drawing it out in the direction of an axis from the ring component 2.In addition, the strength of the direction of an axis of acting onweight 3 by vibration etc. at the time of rotation of the pulley 10 isfaint as compared with the centrifugal force at the time of rotation ofthe pulley 10. Therefore, when the stop-part 42 a and 43 a fit into theouter side stop slot 23 and an inner side stop slot 24, respectively,weight 3 does not shift in the direction of an axis at the time ofrotation of the pulley 10.

In addition, the weight fit-in process of this invention is not limitedto the weight fit-in process 200 of this embodiment. In the state whereweight was fixed to the clip member, which consists of elastic materialor such as metal material and resin material, a motion of thecircumferential direction of the clip member is regulated by the outerside fit-in slot and the inner side fit-in slot, It fits in the outerside stop slot and this inner side stop slot in the state which candetach and attach the clip member freely. When it is the process whicharranges weight in the position which counters the inner side of thisring member, there is same effect at other processes.

Below, the second embodiment of the rotor balance correction method ofthis invention is explained using FIG. 7 (b). In addition, the followingdescription explains for convenience using the rotor balance adjustingmember 1 shown even in FIGS. 1-6.

The second embodiment of the rotor balance correction method is a methodby which the balance of the pulley 10 is corrected, and mainly has thering member fabrication process 120, the weight fit-in process 200, etc.

The ring member fabrication process 120 fabricates the ring member 2 andthe pulley 10 to one, and fabricates them concentrically. Afterfinishing the ring member fabrication process 120, it shifts to theweight fit-in process 200. Since the weight fit-in process 200 is almostthe same as the first embodiment of the rotor balance correction method,explanation is omitted.

As indicated above, the second embodiment of the rotor balancecorrection method has the ring member fabrication process 120 and theweight fit-in process 200. The ring member fabrication process 120 is aprocess which fabricates the ring member 2 and the pulley 10 to one, andis fabricated concentrically. Ring member 2 has the outer side fit-inslot 21 formed in the predetermined position of outer side 2 a in thedirection of an axis, the inner side fit-in slot 22 formed in theposition corresponding to the outer side fit-in slot 21 in the directionof an axis in inner-side 2 b, the outer side stop slot 23 deeper thanthe outer side fit-in slot 21 was formed in the circumferentialdirection at the middle part of outer side 2 a, the inner side stop slot24 deeper than the inner side fit-in slot 22 was formed in thecircumferential direction at the middle part of inner-side 2 b. At theweight fit-in process 200, while weight 3 is fixed to the clip member 4,the clip member 4 is fitted in the ring member 2 along with the outerside fit-in slot 21 and an inner side fit-in slot 22, Stop-part 42 a and43 a are fitted in any 1 set of the outer side fit-in slot 21 and theinner side fit-in slot 22, Weight 3 is arranged in the position whichcounters inner-side 2 b of the ring member 2. The clip member 4 iscrooked in about U form in the metal plate of the shape of a board of anabbreviation rectangle, and the stop part 42 a and 43 a are formed inthe both ends of the clip member 4, respectively.

There is an effect indicated below from the above system. The weight 3fixed to the ring member 2 by the clip member 4 can be prevented out ofthe fixed position, and can be prevented omission from the pulley 10 bythe centrifugal force and vibration by rotation of the pulley 10. Byfitting in the ring member 2 the weight 3 currently fixed to the clipmember 4 in the direction of an axis with the clip member 4, weight 3can be easily attached in the pulley 10. And weight 3 can be easilyremoved to the pulley 10 by drawing out in the direction of an axis fromthe ring member 2. In addition, the power of the direction of an axis bythe vibration at the time of rotation of the pulley 10 etc. of acting onweight 3 is fainter than the centrifugal force which acts on weight 3 atthe time of rotation of the pulley 10. Therefore, stop parts 42 a and 43a engage with the outer side stop slot 23 and the inner side stop slot24, respectively, and weight 3 does not shift in the direction of anaxis at the time of rotation of the pulley 10.

In addition, the clip member of this invention is not limited by theweight fitting process 200 of this embodiment. Where weight is fixed toa clip member, which consists of elastic material, such as metalmaterial and resin material, regulating a motion of the circumferentialdirection for this clip member by this outer side fit-in slot and thisinner side fit-in slot, it fits in at the state which can be freelydetached and attached to this outer side stop slot and this inner sidestop slot, and when it is the structure which arranges this weight inthe position which counters at the inner side of this ring member, theeffect that other structures are the same will be done so.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 Front view of the embodiment of the rotor balance adjustingmember of the invention.

FIG. 2 Side sectional view of the embodiment of the rotor balanceadjusting member of the invention.

FIG. 3 Side expanded sectional view of the embodiment of the rotorbalance adjusting member of the invention.

FIG. 4 Perspective view of the principal part of a ring member.

FIG. 5 Perspective view of a weight and a clip member.

FIG. 6 Perspective view of the principal part of the embodiment of therotor balance adjusting member of this invention.

FIG. 7 Diagram of the first embodiment of the rotor balance correctionmethod of this invention.

FIG. 8 Diagram of the second embodiment of the rotor balance correctionmethod of this invention.

DESCRIPTION OF NOTATIONS

-   1 Rotor Balance Adjusting Member-   2 Ring Member-   3 Weight-   4 Clip Member

1. A balance-adjusting member having a ring member fixed to a rotorconcentrically, a weight, a clip member which fixes said weight to saidring member, said ring member has a outer side fit-in slot formed in theouter side of the ring member in the direction of the axis, an innerside fit-in slot formed in the position corresponding to the outer sidefit-in slot in the direction of the axis at inner side of the ringmember, a outer side stop slot deeper than said outer side fit-in slotand formed in the direction of a circumference at the middle part of theouter side of this ring member, an inner side stop slot deeper than saidouter side fit-in slot and formed in the direction of a circumference atthe middle part of the outer side of this ring member, said clip membercomprising of an elastic substance, whose motion of the circumferencedirection being regulated by the outer side fit-in slot and theinner-side fit-in slot, and being able to fit-in alternately to engageand disengage into said outer side stop slot and said inner side stopslot, said weight fixed to said clip member arranged in the positionwhich counters the inner side of the ring member with the clip memberfitted in the ring member.
 2. A balance-adjusting member as claimed inclaim 1, wherein an engagement projection is formed in said weight, anengagement hole is opened at a portion corresponding to the inner sideof said ring member, said ring member has a release slot corresponds tosaid engagement projection.
 3. A balance-adjusting member as claimed inclaim 1 or 2, wherein said ring has a tapered surface in an end.
 4. Abalance-adjusting member as claimed in claim 1 to 3, wherein said ringmember and said rotor are integrated.
 5. A method of adjusting balanceof rotor comprising a fixing process for a ring member, wherein saidfixing process for a ring member is a process which fixes a ring memberto a rotor concentrically, wherein said ring member has a outer sidefit-in slot formed in a predetermined position of the outer side in theaxis direction, an inner side fit-in slot formed in a positioncorresponding to a outer side fit-in slot in the axis direction in aninner side, a outer side stop slot which is deeper than the outer sidefit-in slot and was formed in the direction of a circumference at amiddle part of the outer side, and an inner-side stop slot which wasdeeper than a the inner-side fit-in slot and was formed in the directionof a circumference at a middle part of the inner side, a weight fittingprocess, wherein said weight fitting process is a process comprising, ina state where the weight fixed to a clip member, wherein said clipmember consists of an elastic substance and is regulated a motion of thecircumference direction by the outer side fit-in slot and the inner sidefit-in slot, fixing the clip member to the outer side stop slot and theinner side stop slot with capability to fit-in alternately to engage anddisengage into, arranging the weight in a position which counters aninner side of a member.
 6. A method of adjusting balance of rotor asclaimed in claim 5, wherein an engagement projection is formed in saidweight, an engagement hole is opened at a portion corresponding to theinner side of said ring member, said ring member has a release slotcorresponds to said engagement projection.
 7. A method for adjustingbalance of rotor as claimed in claim 5 or 6 wherein, said ring memberhas a tapered surface in an end.
 8. A method of adjusting balance ofrotor comprising a fabricating process for a ring member, wherein saidfabricating process for a ring member is a process which fabricates aring member integrated with a rotor concentrically, wherein said ringmember has a outer side fit-in slot formed in a predetermined positionof the outer side in the axis direction, an inner-side fit-in slotformed in a position corresponding to a outer side fit-in slot in theaxis direction in an inner side, a outer side stop slot which is deeperthan the outer side fit-in slot and was formed in the direction of acircumference at a middle part of the outer side, and an inner-side stopslot which was deeper than a the inner-side fit-in slot and was formedin the direction of a circumference at a middle part of a the innerside, a weight fitting process, wherein said weight fitting process is aprocess comprising, in a state where the weight fixed to a clip member,wherein said clip member consists of an elastic substance and isregulated a motion of the circumference direction by the outer sidefit-in slot and the inner side fit-in slot, fixing the clip member tothe outer side stop slot and the inner side stop slot with capability tofit-in alternately to engage and disengage into, arranging the weight ina position which counters an inner side of a member.
 9. A method ofadjusting balance of rotor as claimed in claim 8, wherein an engagementprojection is formed in said weight, an engagement hole is opened at aportion corresponding to the inner side of said ring member, said ringmember has a release slot corresponds to said engagement projection. 10.A method for adjusting balance of rotor as claimed in claim 8 or 9wherein, said ring member has a tapered surface in an end.